This module contains various string related functions.
Compiler implementation of the D programming language http://dlang.org
Strips one leading line terminator of the given string.
The following are what the Unicode standard considers as line terminators: 
 | Name | D Escape Sequence | Unicode Code Point | |---------------------|-------------------|--------------------| | Line feed | \n | U+000A | | Line tabulation | \v | U+000B | | Form feed | \f | U+000C | | Carriage return | \r | U+000D | | Next line | | U+0085 | | Line separator | | U+2028 | | Paragraph separator | | U+2029 | 
 This function will also strip \n\r.
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Licensed under the Boost License 1.0.
    https://dlang.org/phobos/dmd_root_string.html